Wind noise and vibration of wind generators roof mounted

Chris, I have been in the wind energy field for better than 30 years and have helped many, many people with their systems. I would NEVER recommend putting a wind turbine on the roof of any structure, especially a residence. The turbine WILL transmit vibration to the structure, and it won't take very long to get tired of hearing it. Take a 10 or 12 foot long 2x4, and have a friend barely touch a "quiet running" cordless drill to one end, while you put your ear to the other. It won't take long to see how well the vibrations are transmitted through a wood framed structure. Secondly, roof top installations place the turbine in turbulent air coming off the roof. This will result in poor performance, AND the extreme turbulence during gusty shifting winds can snap a blade off very easily. Always mount your wind machine up in "clean" air, at least 15 feet above any object within 300 feet. Your machine will be safer, and will perform much better, resulting in more power for you. Its always a good idea to check any local ordinances before putting up a tower, and if you have neighbors, talk with them about your project before the fact, not after. Lastly, although "clean air" is great, and taller towers are better, never put one up taller than you are willing to climb in the dead of winter! Good luck on your project

Great website, thank you Kristen!
   Steve

My point is that having to mount (at least the AIR-X) on a roof, should not necessarily negate the project. My Aix-X is ten feet over a 12 foot structure (A shed, I would not put one on the roof of a house unless it was concrete or earth bermed) I have registered 77 mph straight line winds (in a storm) from the west (my best wind field direction) with no adverse effect to the Air-X ( it shut down at the rated speed) That speed is a bit unusual, but 25-35mph is not. From the west I get good performance. From the Northeast, I get some turbulance "rotating" of the unit and I am raising the unit soon to see what happens. All other directions seem to be at rating per mph as near as i can tell with my limited insturments.